Question

(vi) The mean of the data xq, X2, X3,
the mean of x, + 4, xz+ 4, x3+ 4,
be
x, is 20 then
10
xint 4 will
10
(a) 20
(b) 24
(c) 40
(d) 10
1-3219
12
(Contd.)​

Answer 1

Step-by-step explanation:

x

1

+...+x

4

=44

x

5

+.....+x

10

=96

x

=14,∑x

i

=140

Variance =

n

∑x

i

2

=

x

2

=4

Standard deviation =2.

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